// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.from
description: >
    Arguments of mapping function (traversed via iterator)
info: |
    [...]
    2. If mapfn is undefined, let mapping be false.
    3. else
       a. If IsCallable(mapfn) is false, throw a TypeError exception.
       b. If thisArg was supplied, let T be thisArg; else let T be undefined.
       c. Let mapping be true
    [...]
    6. If usingIterator is not undefined, then
       [...]
       g. Repeat
          [...]
          vii. If mapping is true, then
               1. Let mappedValue be Call(mapfn, T, «nextValue, k»).
               2. If mappedValue is an abrupt completion, return
                  IteratorClose(iterator, mappedValue).
               3. Let mappedValue be mappedValue.[[value]].
features: [Symbol.iterator]
---*/

function Test() {
    var args = [];
    var firstResult = {
      done: false,
      value: {}
    };
    var secondResult = {
      done: false,
      value: {}
    };
    var mapFn = function(value, idx) {
      args.push(arguments);
    };
    var items = {};
    var nextResult = firstResult;
    var nextNextResult = secondResult;

    items[Symbol.iterator] = function() {
      return {
        next: function() {
          var result = nextResult;
          nextResult = nextNextResult;
          nextNextResult = {
            done: true
          };

          return result;
        }
      };
    };

    Array.from(items, mapFn);

    assert.sameValue(args.length, 2, 'The value of args.length is expected to be 2');

    assert.sameValue(args[0].length, 2, 'The value of args[0].length is expected to be 2');
    assert.sameValue(
      args[0][0], firstResult.value, 'The value of args[0][0] is expected to equal the value of firstResult.value'
    );
    assert.sameValue(args[0][1], 0, 'The value of args[0][1] is expected to be 0');

    assert.sameValue(args[1].length, 2, 'The value of args[1].length is expected to be 2');
    assert.sameValue(
      args[1][0], secondResult.value, 'The value of args[1][0] is expected to equal the value of secondResult.value'
    );
    assert.sameValue(args[1][1], 1, 'The value of args[1][1] is expected to be 1');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
